import {z} from 'zod'

export type BoundingBox = {x0: number, y0: number, x1: number, y1: number, dpi?: number | undefined, class_name?: (string | null) | undefined, text?: (string | null) | undefined, confidence?: (number | null) | undefined};

export type ClassifyLegendRequest = {id: string, name: string, class: string, subtype?: (string | null) | undefined, source_bbox?: (BoundingBox | null) | undefined, source_node_id?: (string | null) | undefined, source_crop_url?: (string | null) | undefined, confidence?: number | undefined, cfihos_tag_class_code?: (string | null) | undefined, cfihos_equipment_class_code?: (string | null) | undefined, cfihos_version?: (string | null) | undefined, cfihos_source?: ('deterministic_map' | 'name_match' | 'isa_letter_code' | 'llm' | 'template_applied' | 'user_pinned' | null) | undefined, cfihos_confidence?: (number | null) | undefined, transcription?: (string | null) | undefined};

export type CreateApiApiV0SemanticCatalogClassifyLegendEntryArgs = {body: ClassifyLegendRequest};

export type CreateApiApiV0SemanticCatalogClassifyLegendEntryOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const boundingBox = z.object({x0: z.number().int(), y0: z.number().int(), x1: z.number().int(), y1: z.number().int(), dpi: z.number().int().optional(), class_name: z.string().nullable().optional(), text: z.string().nullable().optional(), confidence: z.number().nullable().optional()});

export const legendEntry = z.object({id: z.string(), name: z.string(), class: z.string(), subtype: z.string().nullable().optional(), source_bbox: boundingBox.nullable().optional(), source_node_id: z.string().nullable().optional(), source_crop_url: z.string().nullable().optional(), confidence: z.number().optional(), cfihos_tag_class_code: z.string().nullable().optional(), cfihos_equipment_class_code: z.string().nullable().optional(), cfihos_version: z.string().nullable().optional(), cfihos_source: z.enum(["deterministic_map", "name_match", "isa_letter_code", "llm", "template_applied", "user_pinned"]).nullable().optional(), cfihos_confidence: z.number().nullable().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Deterministic CFIHOS classification of a single legend entry
 * 
 * POST /api/v0/semantic-catalog/classify-legend-entry
 */
export const createApiApiV0SemanticCatalogClassifyLegendEntry = async (args: CreateApiApiV0SemanticCatalogClassifyLegendEntryArgs, options: CreateApiApiV0SemanticCatalogClassifyLegendEntryOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v0/semantic-catalog/classify-legend-entry${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(legendEntry, await res.json())
};